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a 0245 kg ball is thrown straight up from 220 m above the ground its initial vertical speed is 880 ms a short time
an elevator cab in the new york marriott marquis has a mass of 4500 kg and can carry a maximum load of 1800 kg if the
a to push a 24 kg crate up a frictionless incline angled at 19deg to the horizontal a worker exerts a force of 995 n
a an initially stationary 20 kg object accelerates horizontally and uniformly to a speed of 9 ms in 33 s in that 33 s
a constant force of magnitude 30 n makes an angle of 150deg measured counterclockwise with the direction of increasing
a a 200-g block is dropped onto a vertical spring with spring constant k 2200 nm the block becomes attached to the
a a 025 kg mass sliding on a horizontal frictionless surface is attached to one end of a horizontal spring with k 400
a 100 kg block is pulled at a constant speed of 74 ms across a horizontal floor by an applied force of 132 n directed
a 226 kg block is on a plane inclined at 224 degrees with respect to the horizontal the coefficient of static friction
a beam of protons is moving toward a target in a particle accelerator this beam constitutes a current whose value is
the potential difference between the plates of a capacitor is 137 v midway between the plates a proton and an electron
the membrane that surrounds a certain type of living cell has a surface area of 74 x 10-9 m2 and a thickness of 11 x
a stone is thrown upward from the top of a building at an angle of 300deg to the horizontal and with an initial speed
a space traveller weighs herself on earth at a location where the acceleration due to gravity is 981 ms2 and finds a
a car with mass 20000kg is moving from rest with acceleration 050ms2 what is its speed after 40s of motion what is its
a 410-kg child swings in a swing supported by two chains each 308 m long the tension in each chain at the lowest point
a proton accelerates from rest in a uniform electric field of 600 nc at one later moment its speed is 150 mms
in a veeertical jump and reach test a 60 kkg ssstudent jumps 60cm while a 90 kg student jumps 45 cm assumming both
a baseball is hit so that it travels straight upward after being struck by the bat a fan observes that it takes 290 s
a bicyclist rides 301 km due east while the resistive force from the air has a magnitude of 771 n and points due west
a person pushes a 123-kg shopping cart at a constant velocity for a distance of 165 m on a flat horizontal surface she
a block of mass 20kg is sliding down an incline plane with no friction the plane makes an 30 degree angle theta with
a cyclist is coasting at a steady speed of 16ms but enters a muddy stretch where the effective coefficient of friction
a 6-mu or micro f capacitor is charged to 120 v and is then connected across a 700-ohm resistorwhat is the initial
a motorcycle has a constant speed of 277 ms as it passes over the top of a hill whose radius of curvature is 168 m the